The SPOT-Light test can measure how many HER2 genes are present in a sample of breast tumor; the more genes there are, the more likely the tumor will respond to treatment with Herceptin.
SPOT - Light检测可计算出一个乳腺癌样本中存在多少her 2基因；这种基因越多，用赫赛汀治疗肿瘤就越有效。
The brighter the spot, the more active that gene is in the tissue sample tested.
点越亮，着样本组织上那个基因越活跃。
Patterns are hard to spot because even when researchers use a large sample size, only a much smaller number of people will get cancer.
即便是选取更多的试样人群，这种局面也很难说清，因为毕竟只有很少部分的人会患上癌症。
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